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-rw-r--r--kernel/events/core.c23
-rw-r--r--kernel/events/hw_breakpoint.c7
-rw-r--r--kernel/events/uprobes.c1
3 files changed, 6 insertions, 25 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 446fbeefad1c..e56923026dd8 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -1562,8 +1562,10 @@ static void perf_remove_from_context(struct perf_event *event, bool detach_group
if (!task) {
/*
- * Per cpu events are removed via an smp call and
- * the removal is always successful.
+ * Per cpu events are removed via an smp call. The removal can
+ * fail if the CPU is currently offline, but in that case we
+ * already called __perf_remove_from_context from
+ * perf_event_exit_cpu.
*/
cpu_function_call(event->cpu, __perf_remove_from_context, &re);
return;
@@ -6071,11 +6073,6 @@ static int perf_swevent_init(struct perf_event *event)
return 0;
}
-static int perf_swevent_event_idx(struct perf_event *event)
-{
- return 0;
-}
-
static struct pmu perf_swevent = {
.task_ctx_nr = perf_sw_context,
@@ -6085,8 +6082,6 @@ static struct pmu perf_swevent = {
.start = perf_swevent_start,
.stop = perf_swevent_stop,
.read = perf_swevent_read,
-
- .event_idx = perf_swevent_event_idx,
};
#ifdef CONFIG_EVENT_TRACING
@@ -6204,8 +6199,6 @@ static struct pmu perf_tracepoint = {
.start = perf_swevent_start,
.stop = perf_swevent_stop,
.read = perf_swevent_read,
-
- .event_idx = perf_swevent_event_idx,
};
static inline void perf_tp_register(void)
@@ -6431,8 +6424,6 @@ static struct pmu perf_cpu_clock = {
.start = cpu_clock_event_start,
.stop = cpu_clock_event_stop,
.read = cpu_clock_event_read,
-
- .event_idx = perf_swevent_event_idx,
};
/*
@@ -6511,8 +6502,6 @@ static struct pmu perf_task_clock = {
.start = task_clock_event_start,
.stop = task_clock_event_stop,
.read = task_clock_event_read,
-
- .event_idx = perf_swevent_event_idx,
};
static void perf_pmu_nop_void(struct pmu *pmu)
@@ -6542,7 +6531,7 @@ static void perf_pmu_cancel_txn(struct pmu *pmu)
static int perf_event_idx_default(struct perf_event *event)
{
- return event->hw.idx + 1;
+ return 0;
}
/*
@@ -8130,7 +8119,7 @@ static void perf_pmu_rotate_stop(struct pmu *pmu)
static void __perf_event_exit_context(void *__info)
{
- struct remove_event re = { .detach_group = false };
+ struct remove_event re = { .detach_group = true };
struct perf_event_context *ctx = __info;
perf_pmu_rotate_stop(ctx->pmu);
diff --git a/kernel/events/hw_breakpoint.c b/kernel/events/hw_breakpoint.c
index 1559fb0b9296..9803a6600d49 100644
--- a/kernel/events/hw_breakpoint.c
+++ b/kernel/events/hw_breakpoint.c
@@ -605,11 +605,6 @@ static void hw_breakpoint_stop(struct perf_event *bp, int flags)
bp->hw.state = PERF_HES_STOPPED;
}
-static int hw_breakpoint_event_idx(struct perf_event *bp)
-{
- return 0;
-}
-
static struct pmu perf_breakpoint = {
.task_ctx_nr = perf_sw_context, /* could eventually get its own */
@@ -619,8 +614,6 @@ static struct pmu perf_breakpoint = {
.start = hw_breakpoint_start,
.stop = hw_breakpoint_stop,
.read = hw_breakpoint_pmu_read,
-
- .event_idx = hw_breakpoint_event_idx,
};
int __init init_hw_breakpoint(void)
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 1d0af8a2c646..ed8f2cde34c5 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -1640,7 +1640,6 @@ bool uprobe_deny_signal(void)
if (__fatal_signal_pending(t) || arch_uprobe_xol_was_trapped(t)) {
utask->state = UTASK_SSTEP_TRAPPED;
set_tsk_thread_flag(t, TIF_UPROBE);
- set_tsk_thread_flag(t, TIF_NOTIFY_RESUME);
}
}